//var store vertext shader color info
varying lowp vec4 frag_Color;
//var store texture coord from vertext shader
varying lowp vec2 frag_TexCoord;
//var storee
uniform sampler2D u_Texture;
void main(void) {
// set value for each fragment with vetex color
    //get the color of texCoord Texture :texture2D(u_Texture, frag_TexCoord)
    gl_FragColor = frag_Color * texture2D(u_Texture, frag_TexCoord);
//    gl_FragColor = vec4(1,1,1,1);
}
